<template>
   <div class="login_container">
       <div class="login_box">
           <!-- //这是头像区域 -->
           <div class="avatar_box">
               <img src="../assets/logo.png" alt="">
           </div>
           <!-- 登录表单区域 -->
           <el-form label-width="0" class="demo-ruleForm" :model="form" :rules="loginRules" ref='loginRef'>
               <!-- 用户名区域 -->
                <el-form-item prop="username">
                    <el-input prefix-icon="iconfont icon-user" v-model="form.username"></el-input>
                </el-form-item>
                <!-- 密码区域 -->
                <el-form-item prop='password'>
                    <el-input type="password" prefix-icon="iconfont icon-lock" v-model="form.password"></el-input>
                </el-form-item>
                <!-- 登录区域 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLogin">重置</el-button>
                </el-form-item>
            </el-form>
       </div>
   </div>
</template>

<script>
export default {
  data () {
    return {
      form: {
        username: '',
        password: ''
      },
      // 这是表单的验证规则
      loginRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 点击重置登陆表单
    resetLogin () {
      this.$refs.loginRef.resetFields()
    },
    // 登录函数
    login () {
      this.$refs.loginRef.validate(async (valid) => {
        if (!valid) return
        const { username, password } = this.form
        const { data: res } = await this.$http.post('/login', { username, password })
        if (res.meta.status === 200) {
          this.$message({
            message: '登录成功',
            type: 'success'
          })
          console.log(res.data.token)
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        } else {
          this.$message.error('登陆失败!')
        }
      })
    }
  }

}
</script>

<style lang="less" scoped>
    .login_container{
        font-size: 14px;
        background-color: #2b4b6b;
        height: 100%;
    }
    .login_box{
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 5px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%,-50%);
        .avatar_box{
            height: 130px;
            width: 130px;
            border: 1px solid #eee;
            border-radius: 50%;
            padding: 10px;
            box-shadow: 0 0 10px #ddd;
            position: absolute;
            left: 50%;
            transform: translate(-50%,-50%);
            background-color: #fff;
            img{
                width: 100%;
                height: 100%;
                border-radius: 50%;
                background-color: #eee;
            }
        }
    }
    .demo-ruleForm{
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }
    .btns{
        display: flex;
        justify-content: flex-end;
    }
</style>
